Having tried out this puzzle myself and being dumbfounded as to what to do with it, having a solution is definitely a great thing to watch. Giving me pointers and even new ways to think of solving the cube definitely helps a lot.
You can purchase a Constrained Cube 90 at Puzzle Master.
Thank you Kenneth for allowing us to use your videos. If you would like to see more of Kenneth’s videos, go to Kenneth’s Youtube Channel.
Copyright (c) 2013, Kenneth Brandon